1212012022200 has 96 divisors (see below), whose sum is σ = 4293985464960. Its totient is φ = 277031318400.

The previous prime is 1212012022183. The next prime is 1212012022213. The reversal of 1212012022200 is 22202102121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1212012022200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144282946 + ... + 144291345.

It is an arithmetic number, because the mean of its divisors is an integer number (44729015260).

Almost surely, 2^{1212012022200} is an apocalyptic number.

1212012022200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212012022200 is an abundant number, since it is smaller than the sum of its proper divisors (3081973442760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212012022200 is a wasteful number, since it uses less digits than its factorization.

1212012022200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288574317 (or 288574308 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1212012022200 its reverse (22202102121), we get a palindrome (1234214124321).

The spelling of 1212012022200 in words is "one trillion, two hundred twelve billion, twelve million, twenty-two thousand, two hundred".